Forging-press.



' A. GHRISTIANSON.

FORGING PRESS. APPLIOATIWON FILED AUG. 12, 1901.

- 'Patented May 18, 1909.

6 SHEETS-SHEET 1.

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H l H i I I1] lmmlm r iii 22 g1 2,2 79 {I 20 m' i vE1 i g j t 21 5- i 6W i w 1 A. GHRI STIANSON FORGING PRESS. APPLICATION FILED AUG. 12,19Q7'.

922,392. Patghted May18.1909.

6 SHEETS-SHEET 2.

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Y1 mvs 1- 551" "A; GHRISTIANSON.

TORGING PRESS. APPLICATION FILED AUG. 12, 1907. 922,392. V Y PatentedMay 18, 1909.

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9. w WW Patented May 18, 19.09.

6 SHEETS-SHEET 4.

A. GHRISTIANSON. FORGING PRESS. APPLICATION mm AUG. 12, 901.. 922392.

NMW. o m Q fi W mm OW A. GHRISTIANSON.

FORGIN G PRESS. API LIOATION FILED AUG. 12, 1907.

Patnted May 18, 1909.. v

6 SHEETS-SHEET 5- TOR J ZZMM Patented. May 18, 1909 yzww WW PORGINGPRESS.

Ar GHRISTIANSDN.

I 7 APPLICATION FILED AUG. 12, 1907.

922,392. FIG,.6

wrmsss'zs- I INVE 1 and more especially UNITED srnrssra'rnn ETQ.

ANDREW CHRISTIANSON, OF BUTLER, PENNSYLVANIA, ASSIGNOR TO FORGED STEELWHEEL COMPANY, OF PITTSBURG, PENNSXLVANIA, A OGRPORATION OFPENNSYLVANIA.

"FORGING-PRE SS.

na'eaasee.

Specification of Letters Patent.

Patented May 18, 1909.

' Application filed Ajzgust 12, 1907. Serial No. 388,217. I

i To all whom it may oacern:

Be it known that L'ANDREW CHRISTIAN- son, a resident of Butler, in thecounty of Butler and State of Pennsylvania, have-invented a new anduseful Improvement in F0 -Presses; and I do hereby declare the followingto be a, full, clear, and exact description thereof. a

This invention relates to forging presses to hydraulic presses formaking large forgings.

The object of the invention is to provide a press which will give alarge output and by means of simple 'andistrong mechanism.

The invention comprises, generally stated,

a forging press having a pair of rotatable die carriers, each-carrylng aplurality of dies, together with mechanism for rotating said carrierstobring opposing dies inoperative 2o relation, and platensor pressuremechanism to cause the die carriers and dies to approach each other forthe forging operation. The invention also com rises certain de-' tailsof construction uJl' arrangement of parts hereinafter described andclaimed. 'a

In the accom anying drawings Figure 1 is a view principa y in elevationand part1 in v section ookin at one'side of the press; igq 2 is a viewloo 'ng at the'opposite side of the I press; Fig. 3 is alan view of theress; Fig.

4 is a 'horizonta section on the ine 4-4, Fig. .1; Fig. 5 is a similarview on the line 5-5, 1; Fig. 6 is" a vertical sectional view on theline 66, Fig. 3; and Figs: 7, 8, 9 and 10 are detail sectional viewstaken respectively on thelines 7 2, 8-8 9-9, and 1o-10, Fig. 5.

The press comprises a suitable base 1 and head 2, of substantiallydiamond shape, united at the corners by four heavy rods or columns 3, 3;4 and 5; These columns ass vthrough holes in the base and head and arerovi ed with suitable means, such as nuts 6, orpreventing separation ofthe base and hea in the ordinary manner of constructing hydraulicpresses." Rotatably mounted on the column 4 is a die carrier 7'andsimilarly mounted upon the est 5 is a corresponding diecarrier 8.-'Eac of these-carriers carries 5p a plurality of dies, the drawingsshowing each 081M161 as providedfwith three dies,

namely, the'bottoln dies fi on the carrier 7 top dues JO-on'thecarrier8.,- The art-lcularrdies shown are for forging steel w eelblankegthe hottom dies hav ng the forging I sembling' the same with thering 17, but as binding on the columns.

.trallyperforated for the passage of piercing mandrels or punches 13 and14 respectivel to formithe eye of the wheel blank. It wi l be.;understood that these dies may be replaced by others for shapinarticles other than wheel blanks. One or 0th of the die carriers aremounted for vertical movement so as to cause the dies to approach eachother to perform the forging operation. As shown the to die 0&1'1'181 8alone is vertically movab e, being slidably as well as rotatably mountedon the column'5 and being vertically movable together with the topplaten orpressure head 15 which is slidably mounted on'the columns. Thedie carrier is rotatably connected to this platen by being provided onits u per side, around the openingsurroundin t e column 5, with an overhanging collar or flange 16.which is engaged by a ring 17 suitablysecured to the p aten or pressure head 15 and provided with a ledge 18which lies underneath the flange or collar 16 on the carrier 8.Consequently,

said carrier moves upwardly and downwardly with the platen 15 but isfree to rotate on the column 5. I The upper die carrier will be made insections to permitasthis is a urely mechanical featurei-it has notbeeniliistrated.

The platen 15 is raised by means of a air of power cylinders 20 formedor secure to castings 21 which are clamped to the two diagonallyopposite columns 3, the piston rods 22 of said cylinders bearing againstlugs 23 on-the platen 15. An additional cylinder 25 secured to the head2 of the machine has its piston connected by means of rods 26 to theplaten 15 approximately above the oint of su port of the die carrier 8on said p aten,

for t 1e purpose of counter-balancing the (lie carrier 8 and preventingthe platen 15 from The platen 15 is depressed to perform the forgingoperation by means of one or more hydraulic cylinders 28 formed in orsecured to the head 2 and having their piston rods connected to saidplaten. The drawings showfour cylinders for this purpose. 7 I

The bottom central die or punch '13 is operated by a plunger 30 actuatedby 2. wer' cylinder 31 mounted in or below the ase 1 of the machine,while the top central die or 0 nected to the piston 33 ofa powercylinder 34 in the head 2 of the machine. All of the cylinders describedare singleacting cylinders and in order to raise the plunger 32 anadditional single acting cylinder 35 is pro vided having its piston rodconnected to the piston 33 of the cylinder 34.

The punches 13 and 14 are only short members, notextending farther downor up than the bottom and top faces of the dies 9 and 10 respectively soas not to interfere with the free rotation of the die carriers 7 and 8.To prevent the dies 9 and 10 from scraping on the anvil l and platenrespectively when the die carriers are rotated, said dies are so mountedon the carriers that they automatically free themselves from contactwith the base or anvil 1 and platen 15 as soon as pressure is relieved.As shown, the dies are provided with lugs 37 and the die carriers withcorresponding lugs 38, and interposed between these lugs are springs 39.The springs 39 of the lower dies are suiliciently strong to lift thedies away'from the anvil 1, while.

those of the upper dies are not quite strong enough to carry the fullWeight of the, dies, so that the latter drop slightly out of contactwith the platen '15. The springs 39 yield under pressure so that durlngthe forging step said dies are in contact with the anvil 1 and platen 15and therefore subjected to positive pressure. videcl with openings inwhich the dies held by means of the lugs 38.

In the operation of the press the heated blanks are given a preparatoryshaping by a press diagrammatically represented at 40 are and are thenpush ed into the main press onto a die 9 when at stationA, Fig. 4, andarethen carried by the rotation of the die carrier 7. to station E wherethe forging takes place, and again carried by the further rotation ofthe die carriers to station C where the blanks are removed. The diecarrier 7 rotates in the direction of the arrow (1, Fig. 4, while thedie carrier 8 rotates in the direction indicated by the arrow'e. Thestep by step rotation of the die carriers to the several stationsdescribed may be effected by any suitable mechanism. As shown in thedrawings both die carriers are rotated by ratchet or dog mechanismconnected by flexible members to power cylinders.

The lower die carrier 7 is rovided on its bottom face with three notc cs41 designed to receive a dog 41 pivotally mounted in a head 42 and-normally pressed against the thereto a riexible member located in thegroove 44 and consisting of guide plates 47 and anti-friction rollers48, mounted on studs rotatable on the column 5.

The die carriers are pro- The end ofthis flexible member is connected tothe piston rod 51 of a power cylinder 52. The upper die carrier 8 has asplined connection, shown at53, with. a sleeve 54 secured to or formingpart of a ratchet wheel or disk 55 The disk 55 is provided on'itsperiphery with three notches 56 with which cooperates a detent or dog 57pivotally mounted in a head 58 and normally pressed against theperiphery of the disk 55 The head 59 is by means of a spring 59. mountedin a guide way 60 formed in a suitable casting secured to the base 1 andhas connected thereto a flexible member consisting of blocks 61 havinglinks 62 connected thereto by means of pivot members 63. The end of thisflexible member is connected to the piston rod '64 of a power cylinder65.

When the piston rods of the two power cylinders 52 and 65 are pushedoutwardly, the h ads 42 and 58 are pushed around in their respectivegrooves until their dogs or detents engage one of the notches of the diecarriers, when by pulling on the flexible, I

members by means of the dpower cylinders the heads are drawn towar thepower cyl-- inders and the die carriers rotated; The

provided for holding I three notches 67 adapted to be engaged by adetent or dog 68 pivotally mounted ona suitablebr'acket secured to thebase of the press.

This dog is connected-by means of a link 69 with a pivoted member 70having a cam .por-

tion 71 projecting into the ath of the head 42 and provided with an armwhich is connected to a rod 72 extending into a case 73 where it issurrounded by a sprin 74 which acts on said rod and normally holds thedetent 68 in the notch 67 and the cam portion 71 projecting into oracross the groove 44 inv the path of the head 41" moving in said groove.When the head 42 is pushed around to the limit of its stroke to get anew engagement with the die carrier, it strikes the cam ortion 71 of themember 70 and through-the A ink 69 pushes'the detent 68 out of the notch67, thus unlocking the die carrier. As soon as the carrier has rotatedsufliciently far to dis-engage the head 42- from the cam pore" 'tion 71,the spring 74 causes the detent 68 to bear against the periphery of thedie carrier and as soon as the next notch comes opposite said detent thelatter snaps into the same and thus locks and positions said diecarrier. Theupper die carrier likewise isprovided withthree. notches 76and co6perating the same is a detent or dog 7? mounted one cock shaft 78 and slidingup and down .on said shaft with the raising and lowering ofthe upper diecarrier. To permit this the detent has a splined connectionwith saidrock shaft, or preferably the rock shaft is formed s uare, asshown at 79, and the detent is held y an arm or bracket 80 connected tothe platen 15. The lower end of said rock shaft has connected thereto anarm. 81 to which is connected one end of a link 82 whose opposite end isconnected to one end of a lever 83 pivotally mounted on the base of themachine, and in turn having its opposite end connected to links or rods84 and 85. mer is connected to a rod 86 projectinginto a spring'case 87where it is surrounded by a spring similar to the spring 73 and actingnormally to pull on the'rod 82 and hold the detent 7 7 in engagementwith the periphery of the die carrier. to a member 88 pivotally mountedon the base and provided with a cam portion 89 projecting into the pathof movement of the head 58. The action of thespring. in case 87 and ofthe cam member 88 cooperating with the head 58 is exactly the same astheeq'uivw lent parts described in connection with the I lower diecarrier, the head 58 automatically dis-engaging the detent 7 7, from thenotches 76 and the spring in'the case 87- causing the said detent tosnap'into thefno-tohes in the periphery of the die carrierv I By meansof the mechanism just, described, the several die .carriers are lockedin their several positions to bring cooperating dies into alinement'. Asa further means for insuring exact alinement of the dies, .the diecarriers are provided with guide members 91 having cooperating faces 92preferably provided with hardened wear surfaces and designed to engagewhen the die carriers approach andinsuring the dies being in exact ialinement when acting on the blank.

The power cylinders 52 and 65 will be operated from the same valve. soasto insure their simultaneous operation and effect the rotation of thedie carriers in unison; The

.two cylinders will be provided with a common 01p materially interferingwith the continuous .o eration of the press, and the feeding of the blinks. into and out of the press can goon The for-- The rod. isconnected overlapping,dies mounted on said carriers,

- said "platen.

practically continuously so that a very large output is secured. F

The operation of the press will be understood from the fore oingdescription,- the blanks being laid on t 1e lower die at station and areautomatically locked in proper position for efiectin the forgingoperation and also automatica 1y unlocked in 'order to permit'theirrotation.

What I-claiin'i's:-

1... In-a'metal-forgin press,- the combination ofa-p air 'ofrotatab edie carriers mounted on "separate centers and overlapping in part diesmounted on said carriers, an anvil against which oneof said carriersbears when in pressing position, and pressure mechan-' ism acting on theother carrier in line with said anvi.

, ,2. In a metal forging press, the combination of a pair of rotatabledie carriers mounted on separate centers and overlapping in part, diesmounted on said carriers, pressure platens located on opposite sides-ofsaid carriers and acting on the overlapping portions thereof, andmechanism for causing said platens to approach and recede from eachother: a

3. .In a metarsrging press, the combination of a pair of rotatable diecarriers mounted on separate centers and having edge portionsoverlapping, dies mounted on said carriers, mechanism for imparting anintermittent rotar movement to said carriers, cooperating guide memberson said carriers, and mechanism for causing said carriers to approachand recede from each other. 1 4. In a metal forging press, the o'ombination of a pair of rotatable die carriers mounted on separate centers andhaving portions 115 mechanism for imparting an intermittent rotarymovement to said earners, an anvil against which one of said carriersbears, a

movable platen cooperating with the other carrier, and mechanism foractuating said platen.

5. In a forging press, the combination of two verticalcolumns orstandards, rotatabledie carriers'mounted on said columns-and havingportions overlapping, dies mounted on said carriers, an anvil underneaththe lower die carrier, a platen above the upper I" die carrier, andmechanism ifonaetuatmgfl- Y tions overlapping, dies mounted on saidcarwith. 1

-- tating said rotatable member.

' said platen substantially in line with the the other carrier,mechanism for actuatin said platen, central dies or punches mountemechanism for actuating said platen, central 6. In a forging press, thecombination of a pair of vertical columns or standards, die carriersrotatably mounted on said columns and having portions overlap ing, diesmounted on said carriers, an anvi underneath thelower die carrier, avertically movable platen towhioh the upper die carrier is rotatablysecured, and mechanism for actuating said platen. I v A 7. In aforginpress, the combination of a .pair of vertica columns or standards, diecarriers mounted on said columns with porriers, an anvil cooperatingwith one of said carriers, a platen to which the other carrier isrotatably and eccentrically secured, power cylinders for actuating saidplaten, and counter-balancing mechanism connected to point of connectionof the die carrier there- 8. In a forging press, the combination of abase, a head, four columns or standards connecting the same, a rotatabledie carrier mounted on each of two diagonallyopposite columns andoverlappin in part, dies mounted on said carriers, a p aten uided onsaid columns and having one of t e die carriers rotatably connectedthereto, and powermechanism for actuating said platen.

9. In .a forging press, the combination of two columns or standards, diecarriers rotatably mounted on said columns and overlapping in part, diesmounted on said carriers, an anvil cooperating with one of saidcarriers, a movable platen cooperating with in the main dies, and powerplunger-s operating through openings in the anvil and in the laten foractuating said central dies.

10. n a forging press, the combination of a pair of rotatable diecarriers mounted on separate centers and overlapping in part, diesmounted on each of said carriers, an anvil cooperating with one of saidcarriers, :1 platen cooperating with the other carrier,

dies cooperating with the main dies on one of said carriers, and aplunger for actuating said central dies, said plunger operating throughan opening in the anvi or platen and being arranged to be withdrawnwithin said anvil or platen.

11. In a forging press, the combination of a pair of rotatable diecarriers mounted on separate centers and overlapping in part, diesmounted on said carriers, mechanism for moving one of said carrierstoward and from the other, a'rotatable member having a splinedconnection with said movable carrier, and mechanism for intermittentlyro- 12.- In a for ing press, the combination of mounted adjacent tosaidcarrier on a guide means on said head for engaging the carrier, andmechanism for reciprocating said head. 13. In a forging press, thecombination of jacent to said carrier and moving in a guide concentricwith the center of said d1e carrier,

rier, a flexible member connected to said head, and reciprocatingmechanism connected to said flexible member.

14. In a forging press, the combination of therefor, a detent or dogarranged to engage the carrier, a curved guide in which said detentmoves, reciprocatmg mechanism, and a necting said detent andreciprocating mechamsm.

ranged to engage the carrier, a curved guide in which said detent moves,reciprocating I mechanism, a flexible connector in said guide andconnecting the detent and reciprocating and to be disengaged by therotating meob' anism.

mechanism for causing proach and recede from each other.

17. In a metal for ing press, the combinahorizontal internn ttentlyrotating die carriers mounted on separate centers and having.

bearings for said carriers being beyond the lines of the overlappingportions, and dies supported by said carriers.

tion of a stationary anvil and a'vertically moving platen, ahorizontally but not vertiported by the carriers and adapted to e roughtin line with each'other between the anvil and platen, said dies beingvertically on the operation of the press.

a rotatable e carrier,. a head .movably 20. In a metal forging press,the combinaconcentric withthe center of said carrier,

a rotatable die carrier, 2, head mounted admeans on said head forengaging the die car-- a rotatable die carrier, pressure mechanism' 15.In a forging press, the combination of a rotatable die carrier, a detentor dog ar- 16. In a forging press, the combination of a two columns orstandards, die carriers rota tably mounted on said columns andoverlapping in part, mechanism for inte'rmittently ,rotating saidcarriers, automaticmechanism for locking said carriers, and

said carriers to ap nation of a vertical y moving platen, ,two

18. In a metal'forging press, the combinacally moving die carrier, and adie mounted in riers mounted on separate centers, dies su flexiblecarrier in said curved guide and con. i

mechanism, and locking means for said carrier arranged to automaticallylock the same I their edge portions only overlapping, the

1 20 movingplaten,

n'er movable tion with the res'sing elements, of a diecaron'zontally butnot movable vertically with relation to one of the pressing elements,and a die mounted inthe die car-.

rier on yielding sup1 orts adapted to hold it out of contact wit saidpressing element, said die being verticallymovable in-the carrier andthereby adapted to contact with said pressing element on-the operationof the alinementof the dies.

press.v I 1 t 21. in a metal forging ress, the combinatron with thepressin e ements, of a movable die carrier and a ie mounted therein onill] s rings adapted to sup ort a greater weight tlian the die andthereby hold it out of contact with the pressing element below it -butadapted to contact therewith on the operation of the press. 22. In ametal by the dies are held out of contact with pressing elements, and inthe operation of the press are brought into contact therewith. 23. Inametal forging press, the combina tion of a pair of rotatable diecarriers mountforging press, the combina- -tion of presslng elements, amovable lower ed on separate centersand havingedgepon tions overlapping,dies mounted on said car-- riers, mechanism for imparting anintermittent rotar'y movement to each carrier, mechanism for causingsaid carriers- .to approach and recede from each other, and two ormorecooperating guide members on the overlapping portions of said carriershaving vertical aces opposed to each otherfto insure proper 20 24. hametal forgin press, the combination ofa pair of rotatab e diecarriers-mounted on separate centers and having; edge porvti'o'nsoverlapping, dies mounted on-said car *riers; mechanism for causing saidcarriers to approach and recede from each other, mechanism operating'oneach separate carrier-for imparting an intermittent rotary. motionthereto, locking mechanism for each separate .carrier to hold it inapproximately proper position, and cooperating guide members on theoverlapping portions of the two carriers for causing exact alinement ofthe dies.

In testimony whereof, I the said ANDREW CmusTIA soN-have'. hereunto setmy hand.

ANDREW CHRISTIANSON.

.Witnesses: ROBERT C.-TOTTEN, JOHN F. WILL.

